diff --git a/ncurses/base/lib_clrbot.c b/ncurses/base/lib_clrbot.c
new file mode 100644
index 0000000..df196e8
--- /dev/null
+++ b/ncurses/base/lib_clrbot.c
@@ -0,0 +1,76 @@
+/****************************************************************************
+ * Copyright (c) 1998-2001,2006 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ ****************************************************************************/
+
+/*
+**	lib_clrbot.c
+**
+**	The routine wclrtobot().
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_clrbot.c,v 1.20 2006/10/14 20:43:31 tom Exp $")
+
+NCURSES_EXPORT(int)
+wclrtobot(WINDOW *win)
+{
+    int code = ERR;
+
+    T((T_CALLED("wclrtobot(%p)"), win));
+
+    if (win) {
+	NCURSES_SIZE_T y;
+	NCURSES_SIZE_T startx = win->_curx;
+	NCURSES_CH_T blank = win->_nc_bkgd;
+
+	T(("clearing from y = %ld to y = %ld with maxx =  %ld",
+	   (long) win->_cury, (long) win->_maxy, (long) win->_maxx));
+
+	for (y = win->_cury; y <= win->_maxy; y++) {
+	    struct ldat *line = &(win->_line[y]);
+	    NCURSES_CH_T *ptr = &(line->text[startx]);
+	    NCURSES_CH_T *end = &(line->text[win->_maxx]);
+
+	    CHANGED_TO_EOL(line, startx, win->_maxx);
+
+	    while (ptr <= end)
+		*ptr++ = blank;
+
+	    startx = 0;
+	}
+	_nc_synchook(win);
+	code = OK;
+    }
+    returnCode(code);
+}